Electric bell



(No Model.)

F. B. WOOD.

ELECTRIC BELL.

Patented Mar. 16.1887.

UNITED STATES FRANK B. WOOD, OF NEW YORK, N.

Y., ASSIGNOR TO THE NEV HAVE CLOCK COMPANY, OF NEW HAVEN, CONNECTICUT.

ELECTRIC BELL.

SPECIFICATION forming part of Letters Patent 1\'l'o.359,309I dated March15, 1887.r

Applicatiin filed April 29, 1886. Serial No. 200,531. (No model.)

T0 all whom it may concern:

Be it known that I, FRANK B. WOOD, re siding at New York, in the countyof New York and State of New York, have invented certain new and usefulImprovements in Electric Bells; and I do declare the following to be afull, clear, and exact description of the same, .reference being had tothe accompanying drawings, which form a part of this specification.

My invention relates to an improvement in electric bells, and moreparticularly to casings for the same, the object being to provide forelectric bells a casing which shall be dustproof, adapted for access tothe mechanism of the instrument without disturbing the bell thereof, andsimple, compact, and ornamental.

With these ends in view my invention consists in the combination, with amechanism and al bell located in front of the same, of a frameconstructed to be removed and replaced without disturbing the bell.

My invention further consists in the combination, with a mechanism and abell locatedin front of the same, of a frame constructed to be removedand replaced without disturbing the bell, and a dust-guard locatedbetween the bell and mechanism.

My invention further consists in certain details of construction andcombinations of parts, as will be hereinafterl described, and pointedout in the claims.

In the accompanying drawings, Figure l is a view in front elevation of abell embodying my invention. Fig. 2 is a side View thereof; and Fig. 3is a view showing the casing and the bell in vertical transversesection, and the mechanism in side elevation, and also showing, bybroken lines, the frame as removed over the bell.

As herein shown, the casing consists of a base, A, adapted to be securedtoa wall, desk, or other object, and provided upon its outer face with acircular screw-threaded shoulder, B; of an annular frame, C, open atboth ends, and provided at its inner end and upon its inner face withscrew-threads D, adapting it to be screwed upon the shoulder Baforesaid,and at its outer end with an inwardly-projecting lip, E, and of acircular dust-guard, F, adapted to fit within the frame C, Aand providedwith a central aperture, G, and with an elongated opening, H, as shown.The said dust-guard is mounted through its central aperture, G, upon aspindle, I, located centrally to the frame C, and projecting forward andbeyond the same and the guard, and carrying the bell J, the hammer K ofwhich extends through and vibrates in the opening H of the guard, whichis located between the bell and the mechanism of the instrument, thebell and the frame being proportioned so that the frame will pass freelyover the bell, which, by virtue of making the frame open at both ends,is exposed. A spiral spring, L, encircling the spindle and interposedbetween a washer, M, located behind the guard, and the plate N,supporting the spindle, serves to pass the guard forward and hold itfirmly against the lip of the frame, and so secure and maintain aperfectly dustproof connection between them.

The mechanism of the bell may be of any approved construction. When itis desired to gain access to it for purposes of adjustment or repair,the frame is unscrewed and removed over the bell without disturbing the'same or the dust-guard. After theinstrument has had attention, the frameis passed over the bell without any disturbance of the adjustments justeffected and screwed onto the base of the casing, its lip being pressedagainst the outer edge of the dust-guard to form a dust-tight connectionbetween them.

The adaptation of the casing for access to the mechanism of theinstrument without re moving the bell or disturbing the adjustment ofthe mechanism is of obvious convenience and advantage, as is also theprotection se cured by the dust-guard. Moreover, the exposure of thebell increases its effect and im-V proves the appearance of the device.Further' more, a casing constructed in accordance with my invention isvery simple, compact, and ornamental.

Iwould have it understood that I do not limit myself to the exactconstruction and arrangement of parts herein shown and described, buthold myself at liberty to make such changes and alterations as fairlyfall within the spirit and scope of my invention; neither do I in thisapplication claim the mechanism shown, but reserve the right to do so inanother pending application.

IOO

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In an electric bell, the combination, with a mechanism and a belllocated in front of the same, of a frame to inelose the mechanism andadapted to be removed and replaced without disturbing the bell,substantially as set forth.

2. In an electric bell, the combination,with a mechanism and a belllocated in front of the same, of a frame to inclo'se the mechanism andmade open at both ends, substantially as set forth.

3. In au electric bell, the combinatiomwith a mechanism and a belllocated in front of the same, and mounted upon an outwardly-extendingspindle, of a frame to inclose the mechanism, and adapted to be removedand replaced without disturbing the bell, substantially as set forth.

4. In an electric bell, the combinatiomwith a mechanism and bell, ol' aframe constructed to surround the mechanism and to be removed andreplaced without disturbing the bell, and adustguard located between thebell and mechanism, substantially as set forth.

5. In an electric bell, the combinatiomwith a mechanism and bell, of aframe constructed to surround the mechanism and open at both ends andpassing freely over the bell, and a dust-guard interposed between themechanism and bell and having dust-proof connection with the frame,substantially as set forth.

6. In an electric bell, the combinatiomwith a. mechanism and bell, of aframe constructed to surround the mechanism to be removed and replacedwithout disturbing the bell, and provided at its outer end with aninwardly-projecting lip, and a dust-guard interposed between the belland lncchanism and engaging with the lip of the frame, substantially asset forth.

7 In au electric call-bell, the combination, with a mechanism and bell,of a casing consisting of a base having a circular shoulder upon itsouter face, an annular frame adapted to surround the mechanism to passfreely over the bell, and to have its open inner end secured to theshoulder of the base, and a dust-guard interposed between the bell andmechanism, and having dust-proofconnection with the frame, substantiallyas set forth.

8. In an electric bell, the combinatiomwith a mechanism and bell, of aframe constructed to surround the mechanism and to be removed andreplaced without disturbing the bell, a dust-guard interposed betweenthe mechanism and bell and mounted upon the spindle carrying the latterand having dust-proofconnection with the frame, and a spring forpressing the guard against the frame, substantially as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

FRANK B. WOOD. Vitnesses:

J. GILLr/r Norms, J Anus F. DoYLn.

